Push-button control device for a dental instrument
US5090906A · kind A · utility
11Cited by
4References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Sep 6, 2010 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61C1/141
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The cutting shank of an instrument to be received in the head of a contra-angle of a dentistry handpiece is clamped in position with a pushed-button control device which is displacable counter to a tensioning spring. The control device generally takes the form of at least one reversal element for receiving pressures responsive to movements of the push-button and for converting such movements into a traction movement exerted by the reversal element on the pusher which is used to control the collet chuck which receives the shank of the instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.